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What is the Least Common Multiple of 67778 and 67785?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least common multiple (LCM) of 67778 and 67785 is 4594331730.

LCM(67778,67785) = 4594331730

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Least Common Multiple of 67778 and 67785 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67778 and 67785, than apply into the LCM equation.

GCF(67778,67785) = 1
LCM(67778,67785) = ( 67778 × 67785) / 1
LCM(67778,67785) = 4594331730 / 1
LCM(67778,67785) = 4594331730

Least Common Multiple (LCM) of 67778 and 67785 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67778 and 67785. First we will calculate the prime factors of 67778 and 67785.

Prime Factorization of 67778

Prime factors of 67778 are 2, 33889. Prime factorization of 67778 in exponential form is:

67778 = 21 × 338891

Prime Factorization of 67785

Prime factors of 67785 are 3, 5, 4519. Prime factorization of 67785 in exponential form is:

67785 = 31 × 51 × 45191

Now multiplying the highest exponent prime factors to calculate the LCM of 67778 and 67785.

LCM(67778,67785) = 21 × 338891 × 31 × 51 × 45191
LCM(67778,67785) = 4594331730